/*
  学习目标：项目改造-新建App.js作为根 组件
*/
import React from 'react';
import Header from './components/Header';
import Main from './components/Main';
import { Footer } from './components/Footer';
export default class App extends React.Component {
  render() {
    return (
      <div>
        <Header></Header>
        <Main></Main>
        <Footer></Footer>
      </div>
    );
  }
}
